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Finding the Fourth Proportional to 417,981.40, 626,280.90 and 355,773.40

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Solution

The fourth proportional to 417,981.40, 626,280.90 and 355,773.40 is: 533,071.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,981.40 : 626,280.90 = 355,773.40 : x
  2. Step 2: Convert to fraction form
    417,981.40/626,280.90 = 355,773.40/x
  3. Step 3: Cross multiply
    417,981.40x = 626,280.90 × 355,773.40
  4. Step 4: Simplify right side
    417,981.40x = 222,814,085,148.06
  5. Step 5: Solve for x
    x = 222,814,085,148.06/417,981.40
  6. Step 6: Final answer
    x = 533,071.77

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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.