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Finding the Fourth Proportional to 402,752.65, 555,779.63 and 221,472.22

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Solution

The fourth proportional to 402,752.65, 555,779.63 and 221,472.22 is: 305,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,752.65 : 555,779.63 = 221,472.22 : x
  2. Step 2: Convert to fraction form
    402,752.65/555,779.63 = 221,472.22/x
  3. Step 3: Cross multiply
    402,752.65x = 555,779.63 × 221,472.22
  4. Step 4: Simplify right side
    402,752.65x = 123,089,745,990.07
  5. Step 5: Solve for x
    x = 123,089,745,990.07/402,752.65
  6. Step 6: Final answer
    x = 305,621.20

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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.