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Finding the Fourth Proportional to 370,482.61, 555,725.28 and 89,999.86

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Solution

The fourth proportional to 370,482.61, 555,725.28 and 89,999.86 is: 135,000.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,482.61 : 555,725.28 = 89,999.86 : x
  2. Step 2: Convert to fraction form
    370,482.61/555,725.28 = 89,999.86/x
  3. Step 3: Cross multiply
    370,482.61x = 555,725.28 × 89,999.86
  4. Step 4: Simplify right side
    370,482.61x = 50,015,197,135.51
  5. Step 5: Solve for x
    x = 50,015,197,135.51/370,482.61
  6. Step 6: Final answer
    x = 135,000.12

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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.