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Finding the Fourth Proportional to 292,642.66, 438,625.14 and 134,539.30

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Solution

The fourth proportional to 292,642.66, 438,625.14 and 134,539.30 is: 201,653.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,642.66 : 438,625.14 = 134,539.30 : x
  2. Step 2: Convert to fraction form
    292,642.66/438,625.14 = 134,539.30/x
  3. Step 3: Cross multiply
    292,642.66x = 438,625.14 × 134,539.30
  4. Step 4: Simplify right side
    292,642.66x = 59,012,319,298.00
  5. Step 5: Solve for x
    x = 59,012,319,298.00/292,642.66
  6. Step 6: Final answer
    x = 201,653.17

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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.