Home / 390,455.20-538,867.92-237,503.93

Finding the Fourth Proportional to 390,455.20, 538,867.92 and 237,503.93

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Solution

The fourth proportional to 390,455.20, 538,867.92 and 237,503.93 is: 327,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,455.20 : 538,867.92 = 237,503.93 : x
  2. Step 2: Convert to fraction form
    390,455.20/538,867.92 = 237,503.93/x
  3. Step 3: Cross multiply
    390,455.20x = 538,867.92 × 237,503.93
  4. Step 4: Simplify right side
    390,455.20x = 127,983,247,563.41
  5. Step 5: Solve for x
    x = 127,983,247,563.41/390,455.20
  6. Step 6: Final answer
    x = 327,779.60

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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.