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Finding the Fourth Proportional to 472,615.04, 708,801.60 and 140,113.28

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Solution

The fourth proportional to 472,615.04, 708,801.60 and 140,113.28 is: 210,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,615.04 : 708,801.60 = 140,113.28 : x
  2. Step 2: Convert to fraction form
    472,615.04/708,801.60 = 140,113.28/x
  3. Step 3: Cross multiply
    472,615.04x = 708,801.60 × 140,113.28
  4. Step 4: Simplify right side
    472,615.04x = 99,312,517,045.25
  5. Step 5: Solve for x
    x = 99,312,517,045.25/472,615.04
  6. Step 6: Final answer
    x = 210,134.06

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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.