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Finding the Fourth Proportional to 458,866.04, 688,312.64 and 219,005.22

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Solution

The fourth proportional to 458,866.04, 688,312.64 and 219,005.22 is: 328,514.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,866.04 : 688,312.64 = 219,005.22 : x
  2. Step 2: Convert to fraction form
    458,866.04/688,312.64 = 219,005.22/x
  3. Step 3: Cross multiply
    458,866.04x = 688,312.64 × 219,005.22
  4. Step 4: Simplify right side
    458,866.04x = 150,744,061,151.98
  5. Step 5: Solve for x
    x = 150,744,061,151.98/458,866.04
  6. Step 6: Final answer
    x = 328,514.31

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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.