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Finding the Fourth Proportional to 249,415.68, 374,070 and 71,889.60

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Solution

The fourth proportional to 249,415.68, 374,070 and 71,889.60 is: 107,818.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,415.68 : 374,070 = 71,889.60 : x
  2. Step 2: Convert to fraction form
    249,415.68/374,070 = 71,889.60/x
  3. Step 3: Cross multiply
    249,415.68x = 374,070 × 71,889.60
  4. Step 4: Simplify right side
    249,415.68x = 26,891,742,672.00
  5. Step 5: Solve for x
    x = 26,891,742,672.00/249,415.68
  6. Step 6: Final answer
    x = 107,818.97

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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.