Home / 390,311.04-585,663.36-153,823.20

Finding the Fourth Proportional to 390,311.04, 585,663.36 and 153,823.20

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Solution

The fourth proportional to 390,311.04, 585,663.36 and 153,823.20 is: 230,812.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,311.04 : 585,663.36 = 153,823.20 : x
  2. Step 2: Convert to fraction form
    390,311.04/585,663.36 = 153,823.20/x
  3. Step 3: Cross multiply
    390,311.04x = 585,663.36 × 153,823.20
  4. Step 4: Simplify right side
    390,311.04x = 90,088,612,157.95
  5. Step 5: Solve for x
    x = 90,088,612,157.95/390,311.04
  6. Step 6: Final answer
    x = 230,812.36

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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.