Home / 307,987.47-424,995.03-172,002.51

Finding the Fourth Proportional to 307,987.47, 424,995.03 and 172,002.51

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Solution

The fourth proportional to 307,987.47, 424,995.03 and 172,002.51 is: 237,348.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,987.47 : 424,995.03 = 172,002.51 : x
  2. Step 2: Convert to fraction form
    307,987.47/424,995.03 = 172,002.51/x
  3. Step 3: Cross multiply
    307,987.47x = 424,995.03 × 172,002.51
  4. Step 4: Simplify right side
    307,987.47x = 73,100,211,897.53
  5. Step 5: Solve for x
    x = 73,100,211,897.53/307,987.47
  6. Step 6: Final answer
    x = 237,348.01

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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.