Home / 315,116.10-472,279.95-157,388.58

Finding the Fourth Proportional to 315,116.10, 472,279.95 and 157,388.58

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Solution

The fourth proportional to 315,116.10, 472,279.95 and 157,388.58 is: 235,885.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,116.10 : 472,279.95 = 157,388.58 : x
  2. Step 2: Convert to fraction form
    315,116.10/472,279.95 = 157,388.58/x
  3. Step 3: Cross multiply
    315,116.10x = 472,279.95 × 157,388.58
  4. Step 4: Simplify right side
    315,116.10x = 74,331,470,692.97
  5. Step 5: Solve for x
    x = 74,331,470,692.97/315,116.10
  6. Step 6: Final answer
    x = 235,885.98

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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.