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Finding the Fourth Proportional to 421,230.15, 581,338.29 and 249,203.42

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Solution

The fourth proportional to 421,230.15, 581,338.29 and 249,203.42 is: 343,924.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,230.15 : 581,338.29 = 249,203.42 : x
  2. Step 2: Convert to fraction form
    421,230.15/581,338.29 = 249,203.42/x
  3. Step 3: Cross multiply
    421,230.15x = 581,338.29 × 249,203.42
  4. Step 4: Simplify right side
    421,230.15x = 144,871,490,044.95
  5. Step 5: Solve for x
    x = 144,871,490,044.95/421,230.15
  6. Step 6: Final answer
    x = 343,924.79

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1.5x scale

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.