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Finding the Fourth Proportional to 347,225.60, 521,011.20 and 136,870.40

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Solution

The fourth proportional to 347,225.60, 521,011.20 and 136,870.40 is: 205,373.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,225.60 : 521,011.20 = 136,870.40 : x
  2. Step 2: Convert to fraction form
    347,225.60/521,011.20 = 136,870.40/x
  3. Step 3: Cross multiply
    347,225.60x = 521,011.20 × 136,870.40
  4. Step 4: Simplify right side
    347,225.60x = 71,311,011,348.48
  5. Step 5: Solve for x
    x = 71,311,011,348.48/347,225.60
  6. Step 6: Final answer
    x = 205,373.71

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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.