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Finding the Fourth Proportional to 421,527.95, 581,777.45 and 313,350.83

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Solution

The fourth proportional to 421,527.95, 581,777.45 and 313,350.83 is: 432,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,527.95 : 581,777.45 = 313,350.83 : x
  2. Step 2: Convert to fraction form
    421,527.95/581,777.45 = 313,350.83/x
  3. Step 3: Cross multiply
    421,527.95x = 581,777.45 × 313,350.83
  4. Step 4: Simplify right side
    421,527.95x = 182,300,447,895.54
  5. Step 5: Solve for x
    x = 182,300,447,895.54/421,527.95
  6. Step 6: Final answer
    x = 432,475.35

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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.