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Finding the Fourth Proportional to 522,159.97, 720,526.62 and 307,287.22

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Solution

The fourth proportional to 522,159.97, 720,526.62 and 307,287.22 is: 424,024.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,159.97 : 720,526.62 = 307,287.22 : x
  2. Step 2: Convert to fraction form
    522,159.97/720,526.62 = 307,287.22/x
  3. Step 3: Cross multiply
    522,159.97x = 720,526.62 × 307,287.22
  4. Step 4: Simplify right side
    522,159.97x = 221,408,621,995.80
  5. Step 5: Solve for x
    x = 221,408,621,995.80/522,159.97
  6. Step 6: Final answer
    x = 424,024.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.