Home / 287,242.24-430,927.28-87,578.16

Finding the Fourth Proportional to 287,242.24, 430,927.28 and 87,578.16

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Solution

The fourth proportional to 287,242.24, 430,927.28 and 87,578.16 is: 131,386.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,242.24 : 430,927.28 = 87,578.16 : x
  2. Step 2: Convert to fraction form
    287,242.24/430,927.28 = 87,578.16/x
  3. Step 3: Cross multiply
    287,242.24x = 430,927.28 × 87,578.16
  4. Step 4: Simplify right side
    287,242.24x = 37,739,818,276.20
  5. Step 5: Solve for x
    x = 37,739,818,276.20/287,242.24
  6. Step 6: Final answer
    x = 131,386.73

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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.