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Finding the Fourth Proportional to 291,624.91, 402,442.38 and 157,488.91

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Solution

The fourth proportional to 291,624.91, 402,442.38 and 157,488.91 is: 217,334.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,624.91 : 402,442.38 = 157,488.91 : x
  2. Step 2: Convert to fraction form
    291,624.91/402,442.38 = 157,488.91/x
  3. Step 3: Cross multiply
    291,624.91x = 402,442.38 × 157,488.91
  4. Step 4: Simplify right side
    291,624.91x = 63,380,208,964.35
  5. Step 5: Solve for x
    x = 63,380,208,964.35/291,624.91
  6. Step 6: Final answer
    x = 217,334.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.