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Finding the Fourth Proportional to 421,577.48, 581,762.18 and 240,347.77

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Solution

The fourth proportional to 421,577.48, 581,762.18 and 240,347.77 is: 331,671.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,577.48 : 581,762.18 = 240,347.77 : x
  2. Step 2: Convert to fraction form
    421,577.48/581,762.18 = 240,347.77/x
  3. Step 3: Cross multiply
    421,577.48x = 581,762.18 × 240,347.77
  4. Step 4: Simplify right side
    421,577.48x = 139,825,241,779.80
  5. Step 5: Solve for x
    x = 139,825,241,779.80/421,577.48
  6. Step 6: Final answer
    x = 331,671.51

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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.