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Finding the Fourth Proportional to 421,222.48, 581,195.45 and 249,149.93

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Solution

The fourth proportional to 421,222.48, 581,195.45 and 249,149.93 is: 343,772.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,222.48 : 581,195.45 = 249,149.93 : x
  2. Step 2: Convert to fraction form
    421,222.48/581,195.45 = 249,149.93/x
  3. Step 3: Cross multiply
    421,222.48x = 581,195.45 × 249,149.93
  4. Step 4: Simplify right side
    421,222.48x = 144,804,803,400.72
  5. Step 5: Solve for x
    x = 144,804,803,400.72/421,222.48
  6. Step 6: Final answer
    x = 343,772.74

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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.