Home / 640,169,309.04-960,253,975.08-155,491,851.12

Finding the Fourth Proportional to 640,169,309.04, 960,253,975.08 and 155,491,851.12

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Solution

The fourth proportional to 640,169,309.04, 960,253,975.08 and 155,491,851.12 is: 233,237,779.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,169,309.04 : 960,253,975.08 = 155,491,851.12 : x
  2. Step 2: Convert to fraction form
    640,169,309.04/960,253,975.08 = 155,491,851.12/x
  3. Step 3: Cross multiply
    640,169,309.04x = 960,253,975.08 × 155,491,851.12
  4. Step 4: Simplify right side
    640,169,309.04x = 149,311,668,130,527,552
  5. Step 5: Solve for x
    x = 149,311,668,130,527,552/640,169,309.04
  6. Step 6: Final answer
    x = 233,237,779.48

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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.