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Finding the Fourth Proportional to 421,429.95, 581,525.58 and 249,353.19

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Solution

The fourth proportional to 421,429.95, 581,525.58 and 249,353.19 is: 344,079.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,429.95 : 581,525.58 = 249,353.19 : x
  2. Step 2: Convert to fraction form
    421,429.95/581,525.58 = 249,353.19/x
  3. Step 3: Cross multiply
    421,429.95x = 581,525.58 × 249,353.19
  4. Step 4: Simplify right side
    421,429.95x = 145,005,258,439.60
  5. Step 5: Solve for x
    x = 145,005,258,439.60/421,429.95
  6. Step 6: Final answer
    x = 344,079.15

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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.