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Finding the Fourth Proportional to 403,211.40, 604,298.70 and 245,272.20

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Solution

The fourth proportional to 403,211.40, 604,298.70 and 245,272.20 is: 367,592.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,211.40 : 604,298.70 = 245,272.20 : x
  2. Step 2: Convert to fraction form
    403,211.40/604,298.70 = 245,272.20/x
  3. Step 3: Cross multiply
    403,211.40x = 604,298.70 × 245,272.20
  4. Step 4: Simplify right side
    403,211.40x = 148,217,671,606.14
  5. Step 5: Solve for x
    x = 148,217,671,606.14/403,211.40
  6. Step 6: Final answer
    x = 367,592.96

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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.