Home / 427,990.18-590,630.40-258,191.50

Finding the Fourth Proportional to 427,990.18, 590,630.40 and 258,191.50

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Solution

The fourth proportional to 427,990.18, 590,630.40 and 258,191.50 is: 356,306.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,990.18 : 590,630.40 = 258,191.50 : x
  2. Step 2: Convert to fraction form
    427,990.18/590,630.40 = 258,191.50/x
  3. Step 3: Cross multiply
    427,990.18x = 590,630.40 × 258,191.50
  4. Step 4: Simplify right side
    427,990.18x = 152,495,748,921.60
  5. Step 5: Solve for x
    x = 152,495,748,921.60/427,990.18
  6. Step 6: Final answer
    x = 356,306.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.