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Finding the Fourth Proportional to 421,666.53, 581,900.51 and 249,723.20

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Solution

The fourth proportional to 421,666.53, 581,900.51 and 249,723.20 is: 344,618.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,666.53 : 581,900.51 = 249,723.20 : x
  2. Step 2: Convert to fraction form
    421,666.53/581,900.51 = 249,723.20/x
  3. Step 3: Cross multiply
    421,666.53x = 581,900.51 × 249,723.20
  4. Step 4: Simplify right side
    421,666.53x = 145,314,057,438.83
  5. Step 5: Solve for x
    x = 145,314,057,438.83/421,666.53
  6. Step 6: Final answer
    x = 344,618.43

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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.