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Finding the Fourth Proportional to 370,345.32, 555,403.14 and 133,657.20

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Solution

The fourth proportional to 370,345.32, 555,403.14 and 133,657.20 is: 200,444.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,345.32 : 555,403.14 = 133,657.20 : x
  2. Step 2: Convert to fraction form
    370,345.32/555,403.14 = 133,657.20/x
  3. Step 3: Cross multiply
    370,345.32x = 555,403.14 × 133,657.20
  4. Step 4: Simplify right side
    370,345.32x = 74,233,628,563.61
  5. Step 5: Solve for x
    x = 74,233,628,563.61/370,345.32
  6. Step 6: Final answer
    x = 200,444.35

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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.