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Finding the Fourth Proportional to 472,395.60, 708,679.80 and 191,941.20

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Solution

The fourth proportional to 472,395.60, 708,679.80 and 191,941.20 is: 287,946.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,395.60 : 708,679.80 = 191,941.20 : x
  2. Step 2: Convert to fraction form
    472,395.60/708,679.80 = 191,941.20/x
  3. Step 3: Cross multiply
    472,395.60x = 708,679.80 × 191,941.20
  4. Step 4: Simplify right side
    472,395.60x = 136,024,851,227.76
  5. Step 5: Solve for x
    x = 136,024,851,227.76/472,395.60
  6. Step 6: Final answer
    x = 287,946.91

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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.