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Finding the Fourth Proportional to 421,577.46, 581,762.16 and 240,347.79

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Solution

The fourth proportional to 421,577.46, 581,762.16 and 240,347.79 is: 331,671.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,577.46 : 581,762.16 = 240,347.79 : x
  2. Step 2: Convert to fraction form
    421,577.46/581,762.16 = 240,347.79/x
  3. Step 3: Cross multiply
    421,577.46x = 581,762.16 × 240,347.79
  4. Step 4: Simplify right side
    421,577.46x = 139,825,249,461.63
  5. Step 5: Solve for x
    x = 139,825,249,461.63/421,577.46
  6. Step 6: Final answer
    x = 331,671.55

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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.