Home / 266,152,639.40-399,228,959.10-145,220,287.40

Finding the Fourth Proportional to 266,152,639.40, 399,228,959.10 and 145,220,287.40

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Solution

The fourth proportional to 266,152,639.40, 399,228,959.10 and 145,220,287.40 is: 217,830,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,152,639.40 : 399,228,959.10 = 145,220,287.40 : x
  2. Step 2: Convert to fraction form
    266,152,639.40/399,228,959.10 = 145,220,287.40/x
  3. Step 3: Cross multiply
    266,152,639.40x = 399,228,959.10 × 145,220,287.40
  4. Step 4: Simplify right side
    266,152,639.40x = 57,976,144,178,904,848
  5. Step 5: Solve for x
    x = 57,976,144,178,904,848/266,152,639.40
  6. Step 6: Final answer
    x = 217,830,431.10

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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.