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Finding the Fourth Proportional to 291,987.40, 437,981.10 and 167,225.80

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Solution

The fourth proportional to 291,987.40, 437,981.10 and 167,225.80 is: 250,838.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,987.40 : 437,981.10 = 167,225.80 : x
  2. Step 2: Convert to fraction form
    291,987.40/437,981.10 = 167,225.80/x
  3. Step 3: Cross multiply
    291,987.40x = 437,981.10 × 167,225.80
  4. Step 4: Simplify right side
    291,987.40x = 73,241,739,832.38
  5. Step 5: Solve for x
    x = 73,241,739,832.38/291,987.40
  6. Step 6: Final answer
    x = 250,838.70

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Similar ratio
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1.5x scale

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.