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Finding the Fourth Proportional to 421,341.35, 581,406.26 and 249,265.76

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Solution

The fourth proportional to 421,341.35, 581,406.26 and 249,265.76 is: 343,960.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,341.35 : 581,406.26 = 249,265.76 : x
  2. Step 2: Convert to fraction form
    421,341.35/581,406.26 = 249,265.76/x
  3. Step 3: Cross multiply
    421,341.35x = 581,406.26 × 249,265.76
  4. Step 4: Simplify right side
    421,341.35x = 144,924,669,114.30
  5. Step 5: Solve for x
    x = 144,924,669,114.30/421,341.35
  6. Step 6: Final answer
    x = 343,960.24

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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.