Home / 390,079.84-585,140.04-123,861.22

Finding the Fourth Proportional to 390,079.84, 585,140.04 and 123,861.22

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Solution

The fourth proportional to 390,079.84, 585,140.04 and 123,861.22 is: 185,798.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,079.84 : 585,140.04 = 123,861.22 : x
  2. Step 2: Convert to fraction form
    390,079.84/585,140.04 = 123,861.22/x
  3. Step 3: Cross multiply
    390,079.84x = 585,140.04 × 123,861.22
  4. Step 4: Simplify right side
    390,079.84x = 72,476,159,225.25
  5. Step 5: Solve for x
    x = 72,476,159,225.25/390,079.84
  6. Step 6: Final answer
    x = 185,798.27

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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.