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Finding the Fourth Proportional to 360,209.52, 539,831.28 and 280,343.91

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Solution

The fourth proportional to 360,209.52, 539,831.28 and 280,343.91 is: 420,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,209.52 : 539,831.28 = 280,343.91 : x
  2. Step 2: Convert to fraction form
    360,209.52/539,831.28 = 280,343.91/x
  3. Step 3: Cross multiply
    360,209.52x = 539,831.28 × 280,343.91
  4. Step 4: Simplify right side
    360,209.52x = 151,338,411,775.51
  5. Step 5: Solve for x
    x = 151,338,411,775.51/360,209.52
  6. Step 6: Final answer
    x = 420,139.96

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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.