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Finding the Fourth Proportional to 354,903.96, 532,451.70 and 155,242.20

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Solution

The fourth proportional to 354,903.96, 532,451.70 and 155,242.20 is: 232,905.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,903.96 : 532,451.70 = 155,242.20 : x
  2. Step 2: Convert to fraction form
    354,903.96/532,451.70 = 155,242.20/x
  3. Step 3: Cross multiply
    354,903.96x = 532,451.70 × 155,242.20
  4. Step 4: Simplify right side
    354,903.96x = 82,658,973,301.74
  5. Step 5: Solve for x
    x = 82,658,973,301.74/354,903.96
  6. Step 6: Final answer
    x = 232,905.19

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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.