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Finding the Fourth Proportional to 424,398.02, 636,877.47 and 199,822.67

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Solution

The fourth proportional to 424,398.02, 636,877.47 and 199,822.67 is: 299,866.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,398.02 : 636,877.47 = 199,822.67 : x
  2. Step 2: Convert to fraction form
    424,398.02/636,877.47 = 199,822.67/x
  3. Step 3: Cross multiply
    424,398.02x = 636,877.47 × 199,822.67
  4. Step 4: Simplify right side
    424,398.02x = 127,262,556,518.25
  5. Step 5: Solve for x
    x = 127,262,556,518.25/424,398.02
  6. Step 6: Final answer
    x = 299,866.05

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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.