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Finding the Fourth Proportional to 418,437.65, 627,923.79 and 152,172.83

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Solution

The fourth proportional to 418,437.65, 627,923.79 and 152,172.83 is: 228,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,437.65 : 627,923.79 = 152,172.83 : x
  2. Step 2: Convert to fraction form
    418,437.65/627,923.79 = 152,172.83/x
  3. Step 3: Cross multiply
    418,437.65x = 627,923.79 × 152,172.83
  4. Step 4: Simplify right side
    418,437.65x = 95,552,937,009.01
  5. Step 5: Solve for x
    x = 95,552,937,009.01/418,437.65
  6. Step 6: Final answer
    x = 228,356.45

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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.