Home / 487,946.70-731,701.35-221,570.10

Finding the Fourth Proportional to 487,946.70, 731,701.35 and 221,570.10

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Solution

The fourth proportional to 487,946.70, 731,701.35 and 221,570.10 is: 332,255.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,946.70 : 731,701.35 = 221,570.10 : x
  2. Step 2: Convert to fraction form
    487,946.70/731,701.35 = 221,570.10/x
  3. Step 3: Cross multiply
    487,946.70x = 731,701.35 × 221,570.10
  4. Step 4: Simplify right side
    487,946.70x = 162,123,141,289.64
  5. Step 5: Solve for x
    x = 162,123,141,289.64/487,946.70
  6. Step 6: Final answer
    x = 332,255.84

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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.