Home / 287,066.20-430,549.62-87,338.20

Finding the Fourth Proportional to 287,066.20, 430,549.62 and 87,338.20

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Solution

The fourth proportional to 287,066.20, 430,549.62 and 87,338.20 is: 130,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,066.20 : 430,549.62 = 87,338.20 : x
  2. Step 2: Convert to fraction form
    287,066.20/430,549.62 = 87,338.20/x
  3. Step 3: Cross multiply
    287,066.20x = 430,549.62 × 87,338.20
  4. Step 4: Simplify right side
    287,066.20x = 37,603,428,821.48
  5. Step 5: Solve for x
    x = 37,603,428,821.48/287,066.20
  6. Step 6: Final answer
    x = 130,992.19

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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.