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Finding the Fourth Proportional to 472,569.60, 708,609.60 and 140,102.40

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Solution

The fourth proportional to 472,569.60, 708,609.60 and 140,102.40 is: 210,081.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,569.60 : 708,609.60 = 140,102.40 : x
  2. Step 2: Convert to fraction form
    472,569.60/708,609.60 = 140,102.40/x
  3. Step 3: Cross multiply
    472,569.60x = 708,609.60 × 140,102.40
  4. Step 4: Simplify right side
    472,569.60x = 99,277,905,623.04
  5. Step 5: Solve for x
    x = 99,277,905,623.04/472,569.60
  6. Step 6: Final answer
    x = 210,081.02

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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.