Home / 390,425.22-538,578.45-237,510.18

Finding the Fourth Proportional to 390,425.22, 538,578.45 and 237,510.18

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Solution

The fourth proportional to 390,425.22, 538,578.45 and 237,510.18 is: 327,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,425.22 : 538,578.45 = 237,510.18 : x
  2. Step 2: Convert to fraction form
    390,425.22/538,578.45 = 237,510.18/x
  3. Step 3: Cross multiply
    390,425.22x = 538,578.45 × 237,510.18
  4. Step 4: Simplify right side
    390,425.22x = 127,917,864,603.62
  5. Step 5: Solve for x
    x = 127,917,864,603.62/390,425.22
  6. Step 6: Final answer
    x = 327,637.30

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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.