Home / 287,869.10-431,799.60-130,097.30

Finding the Fourth Proportional to 287,869.10, 431,799.60 and 130,097.30

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Solution

The fourth proportional to 287,869.10, 431,799.60 and 130,097.30 is: 195,144.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,869.10 : 431,799.60 = 130,097.30 : x
  2. Step 2: Convert to fraction form
    287,869.10/431,799.60 = 130,097.30/x
  3. Step 3: Cross multiply
    287,869.10x = 431,799.60 × 130,097.30
  4. Step 4: Simplify right side
    287,869.10x = 56,175,962,101.08
  5. Step 5: Solve for x
    x = 56,175,962,101.08/287,869.10
  6. Step 6: Final answer
    x = 195,144.12

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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.