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Finding the Fourth Proportional to 539,077.74, 808,298.28 and 239,415

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Solution

The fourth proportional to 539,077.74, 808,298.28 and 239,415 is: 358,981.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,077.74 : 808,298.28 = 239,415 : x
  2. Step 2: Convert to fraction form
    539,077.74/808,298.28 = 239,415/x
  3. Step 3: Cross multiply
    539,077.74x = 808,298.28 × 239,415
  4. Step 4: Simplify right side
    539,077.74x = 193,518,732,706.20
  5. Step 5: Solve for x
    x = 193,518,732,706.20/539,077.74
  6. Step 6: Final answer
    x = 358,981.12

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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.