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Finding the Fourth Proportional to 399,854.04, 551,798.53 and 218,566.69

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Solution

The fourth proportional to 399,854.04, 551,798.53 and 218,566.69 is: 301,622.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,854.04 : 551,798.53 = 218,566.69 : x
  2. Step 2: Convert to fraction form
    399,854.04/551,798.53 = 218,566.69/x
  3. Step 3: Cross multiply
    399,854.04x = 551,798.53 × 218,566.69
  4. Step 4: Simplify right side
    399,854.04x = 120,604,779,621.74
  5. Step 5: Solve for x
    x = 120,604,779,621.74/399,854.04
  6. Step 6: Final answer
    x = 301,622.01

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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.