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Finding the Fourth Proportional to 255,088.20, 382,672.80 and 86,624.40

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Solution

The fourth proportional to 255,088.20, 382,672.80 and 86,624.40 is: 129,950.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,088.20 : 382,672.80 = 86,624.40 : x
  2. Step 2: Convert to fraction form
    255,088.20/382,672.80 = 86,624.40/x
  3. Step 3: Cross multiply
    255,088.20x = 382,672.80 × 86,624.40
  4. Step 4: Simplify right side
    255,088.20x = 33,148,801,696.32
  5. Step 5: Solve for x
    x = 33,148,801,696.32/255,088.20
  6. Step 6: Final answer
    x = 129,950.35

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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.