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Finding the Fourth Proportional to 255,417.68, 383,158.30 and 86,925.05

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Solution

The fourth proportional to 255,417.68, 383,158.30 and 86,925.05 is: 130,398.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,417.68 : 383,158.30 = 86,925.05 : x
  2. Step 2: Convert to fraction form
    255,417.68/383,158.30 = 86,925.05/x
  3. Step 3: Cross multiply
    255,417.68x = 383,158.30 × 86,925.05
  4. Step 4: Simplify right side
    255,417.68x = 33,306,053,852.14
  5. Step 5: Solve for x
    x = 33,306,053,852.14/255,417.68
  6. Step 6: Final answer
    x = 130,398.39

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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.