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Finding the Fourth Proportional to 417,965, 626,332.94 and 247,010.76

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Solution

The fourth proportional to 417,965, 626,332.94 and 247,010.76 is: 370,152.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,965 : 626,332.94 = 247,010.76 : x
  2. Step 2: Convert to fraction form
    417,965/626,332.94 = 247,010.76/x
  3. Step 3: Cross multiply
    417,965x = 626,332.94 × 247,010.76
  4. Step 4: Simplify right side
    417,965x = 154,710,975,522.43
  5. Step 5: Solve for x
    x = 154,710,975,522.43/417,965
  6. Step 6: Final answer
    x = 370,152.94

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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.