Home / 421,431.96-581,528.34-249,355.20

Finding the Fourth Proportional to 421,431.96, 581,528.34 and 249,355.20

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Solution

The fourth proportional to 421,431.96, 581,528.34 and 249,355.20 is: 344,081.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,431.96 : 581,528.34 = 249,355.20 : x
  2. Step 2: Convert to fraction form
    421,431.96/581,528.34 = 249,355.20/x
  3. Step 3: Cross multiply
    421,431.96x = 581,528.34 × 249,355.20
  4. Step 4: Simplify right side
    421,431.96x = 145,007,115,526.37
  5. Step 5: Solve for x
    x = 145,007,115,526.37/421,431.96
  6. Step 6: Final answer
    x = 344,081.91

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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.