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Finding the Fourth Proportional to 472,348.47, 708,369.19 and 156,720.63

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Solution

The fourth proportional to 472,348.47, 708,369.19 and 156,720.63 is: 235,030.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,348.47 : 708,369.19 = 156,720.63 : x
  2. Step 2: Convert to fraction form
    472,348.47/708,369.19 = 156,720.63/x
  3. Step 3: Cross multiply
    472,348.47x = 708,369.19 × 156,720.63
  4. Step 4: Simplify right side
    472,348.47x = 111,016,065,729.39
  5. Step 5: Solve for x
    x = 111,016,065,729.39/472,348.47
  6. Step 6: Final answer
    x = 235,030.01

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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.