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Finding the Fourth Proportional to 472,922.70, 709,384.05 and 140,498.70

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Solution

The fourth proportional to 472,922.70, 709,384.05 and 140,498.70 is: 210,748.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,922.70 : 709,384.05 = 140,498.70 : x
  2. Step 2: Convert to fraction form
    472,922.70/709,384.05 = 140,498.70/x
  3. Step 3: Cross multiply
    472,922.70x = 709,384.05 × 140,498.70
  4. Step 4: Simplify right side
    472,922.70x = 99,667,536,825.74
  5. Step 5: Solve for x
    x = 99,667,536,825.74/472,922.70
  6. Step 6: Final answer
    x = 210,748.05

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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.