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Finding the Fourth Proportional to 240,420.90, 360,312.80 and 127,858.76

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Solution

The fourth proportional to 240,420.90, 360,312.80 and 127,858.76 is: 191,618.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,420.90 : 360,312.80 = 127,858.76 : x
  2. Step 2: Convert to fraction form
    240,420.90/360,312.80 = 127,858.76/x
  3. Step 3: Cross multiply
    240,420.90x = 360,312.80 × 127,858.76
  4. Step 4: Simplify right side
    240,420.90x = 46,069,147,820.13
  5. Step 5: Solve for x
    x = 46,069,147,820.13/240,420.90
  6. Step 6: Final answer
    x = 191,618.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.