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Finding the Fourth Proportional to 321,757.79, 482,733.54 and 290,018.93

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Solution

The fourth proportional to 321,757.79, 482,733.54 and 290,018.93 is: 435,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,757.79 : 482,733.54 = 290,018.93 : x
  2. Step 2: Convert to fraction form
    321,757.79/482,733.54 = 290,018.93/x
  3. Step 3: Cross multiply
    321,757.79x = 482,733.54 × 290,018.93
  4. Step 4: Simplify right side
    321,757.79x = 140,001,862,332.24
  5. Step 5: Solve for x
    x = 140,001,862,332.24/321,757.79
  6. Step 6: Final answer
    x = 435,115.70

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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.