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Finding the Fourth Proportional to 260,368.46, 390,048.31 and 147,707.89

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Solution

The fourth proportional to 260,368.46, 390,048.31 and 147,707.89 is: 221,275.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,368.46 : 390,048.31 = 147,707.89 : x
  2. Step 2: Convert to fraction form
    260,368.46/390,048.31 = 147,707.89/x
  3. Step 3: Cross multiply
    260,368.46x = 390,048.31 × 147,707.89
  4. Step 4: Simplify right side
    260,368.46x = 57,613,212,077.68
  5. Step 5: Solve for x
    x = 57,613,212,077.68/260,368.46
  6. Step 6: Final answer
    x = 221,275.70

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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.