Home / 288,266,141.40-432,399,212.10-285,578,755.80

Finding the Fourth Proportional to 288,266,141.40, 432,399,212.10 and 285,578,755.80

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Solution

The fourth proportional to 288,266,141.40, 432,399,212.10 and 285,578,755.80 is: 428,368,133.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,266,141.40 : 432,399,212.10 = 285,578,755.80 : x
  2. Step 2: Convert to fraction form
    288,266,141.40/432,399,212.10 = 285,578,755.80/x
  3. Step 3: Cross multiply
    288,266,141.40x = 432,399,212.10 × 285,578,755.80
  4. Step 4: Simplify right side
    288,266,141.40x = 123,484,029,000,418,320
  5. Step 5: Solve for x
    x = 123,484,029,000,418,320/288,266,141.40
  6. Step 6: Final answer
    x = 428,368,133.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.