Home / 260,109,319.38-390,165,282.90-66,020,792.46

Finding the Fourth Proportional to 260,109,319.38, 390,165,282.90 and 66,020,792.46

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Solution

The fourth proportional to 260,109,319.38, 390,165,282.90 and 66,020,792.46 is: 99,031,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,109,319.38 : 390,165,282.90 = 66,020,792.46 : x
  2. Step 2: Convert to fraction form
    260,109,319.38/390,165,282.90 = 66,020,792.46/x
  3. Step 3: Cross multiply
    260,109,319.38x = 390,165,282.90 × 66,020,792.46
  4. Step 4: Simplify right side
    260,109,319.38x = 25,759,021,167,438,084
  5. Step 5: Solve for x
    x = 25,759,021,167,438,084/260,109,319.38
  6. Step 6: Final answer
    x = 99,031,519.63

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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.