Home / 390,335.11-538,454.67-237,420.07

Finding the Fourth Proportional to 390,335.11, 538,454.67 and 237,420.07

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Solution

The fourth proportional to 390,335.11, 538,454.67 and 237,420.07 is: 327,513.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,335.11 : 538,454.67 = 237,420.07 : x
  2. Step 2: Convert to fraction form
    390,335.11/538,454.67 = 237,420.07/x
  3. Step 3: Cross multiply
    390,335.11x = 538,454.67 × 237,420.07
  4. Step 4: Simplify right side
    390,335.11x = 127,839,945,215.32
  5. Step 5: Solve for x
    x = 127,839,945,215.32/390,335.11
  6. Step 6: Final answer
    x = 327,513.31

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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.