Home / 287,139.12-396,266.04-173,972.40

Finding the Fourth Proportional to 287,139.12, 396,266.04 and 173,972.40

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Solution

The fourth proportional to 287,139.12, 396,266.04 and 173,972.40 is: 240,090.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,139.12 : 396,266.04 = 173,972.40 : x
  2. Step 2: Convert to fraction form
    287,139.12/396,266.04 = 173,972.40/x
  3. Step 3: Cross multiply
    287,139.12x = 396,266.04 × 173,972.40
  4. Step 4: Simplify right side
    287,139.12x = 68,939,354,017.30
  5. Step 5: Solve for x
    x = 68,939,354,017.30/287,139.12
  6. Step 6: Final answer
    x = 240,090.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.