Home / 390,002.36-585,091.04-130,359.47

Finding the Fourth Proportional to 390,002.36, 585,091.04 and 130,359.47

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Solution

The fourth proportional to 390,002.36, 585,091.04 and 130,359.47 is: 195,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,002.36 : 585,091.04 = 130,359.47 : x
  2. Step 2: Convert to fraction form
    390,002.36/585,091.04 = 130,359.47/x
  3. Step 3: Cross multiply
    390,002.36x = 585,091.04 × 130,359.47
  4. Step 4: Simplify right side
    390,002.36x = 76,272,154,298.90
  5. Step 5: Solve for x
    x = 76,272,154,298.90/390,002.36
  6. Step 6: Final answer
    x = 195,568.45

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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.