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Finding the Fourth Proportional to 292,012.80, 438,019.20 and 114,525.60

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Solution

The fourth proportional to 292,012.80, 438,019.20 and 114,525.60 is: 171,788.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,012.80 : 438,019.20 = 114,525.60 : x
  2. Step 2: Convert to fraction form
    292,012.80/438,019.20 = 114,525.60/x
  3. Step 3: Cross multiply
    292,012.80x = 438,019.20 × 114,525.60
  4. Step 4: Simplify right side
    292,012.80x = 50,164,411,691.52
  5. Step 5: Solve for x
    x = 50,164,411,691.52/292,012.80
  6. Step 6: Final answer
    x = 171,788.40

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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.