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Finding the Fourth Proportional to 292,406.10, 438,609.15 and 187,430.10

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Solution

The fourth proportional to 292,406.10, 438,609.15 and 187,430.10 is: 281,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,406.10 : 438,609.15 = 187,430.10 : x
  2. Step 2: Convert to fraction form
    292,406.10/438,609.15 = 187,430.10/x
  3. Step 3: Cross multiply
    292,406.10x = 438,609.15 × 187,430.10
  4. Step 4: Simplify right side
    292,406.10x = 82,208,556,845.42
  5. Step 5: Solve for x
    x = 82,208,556,845.42/292,406.10
  6. Step 6: Final answer
    x = 281,145.15

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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.