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Finding the Fourth Proportional to 260,071.76, 390,114.93 and 127,058.42

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Solution

The fourth proportional to 260,071.76, 390,114.93 and 127,058.42 is: 190,591.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,071.76 : 390,114.93 = 127,058.42 : x
  2. Step 2: Convert to fraction form
    260,071.76/390,114.93 = 127,058.42/x
  3. Step 3: Cross multiply
    260,071.76x = 390,114.93 × 127,058.42
  4. Step 4: Simplify right side
    260,071.76x = 49,567,386,624.21
  5. Step 5: Solve for x
    x = 49,567,386,624.21/260,071.76
  6. Step 6: Final answer
    x = 190,591.19

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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.