Home / 252,917.40-379,397.70-86,705.40

Finding the Fourth Proportional to 252,917.40, 379,397.70 and 86,705.40

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Solution

The fourth proportional to 252,917.40, 379,397.70 and 86,705.40 is: 130,065.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,917.40 : 379,397.70 = 86,705.40 : x
  2. Step 2: Convert to fraction form
    252,917.40/379,397.70 = 86,705.40/x
  3. Step 3: Cross multiply
    252,917.40x = 379,397.70 × 86,705.40
  4. Step 4: Simplify right side
    252,917.40x = 32,895,829,337.58
  5. Step 5: Solve for x
    x = 32,895,829,337.58/252,917.40
  6. Step 6: Final answer
    x = 130,065.50

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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.