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Finding the Fourth Proportional to 472,671.70, 709,007.55 and 157,087.60

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Solution

The fourth proportional to 472,671.70, 709,007.55 and 157,087.60 is: 235,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,671.70 : 709,007.55 = 157,087.60 : x
  2. Step 2: Convert to fraction form
    472,671.70/709,007.55 = 157,087.60/x
  3. Step 3: Cross multiply
    472,671.70x = 709,007.55 × 157,087.60
  4. Step 4: Simplify right side
    472,671.70x = 111,376,294,411.38
  5. Step 5: Solve for x
    x = 111,376,294,411.38/472,671.70
  6. Step 6: Final answer
    x = 235,631.40

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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.