Home / 430,292.48-645,329.04-305,108.60

Finding the Fourth Proportional to 430,292.48, 645,329.04 and 305,108.60

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Solution

The fourth proportional to 430,292.48, 645,329.04 and 305,108.60 is: 457,585.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,292.48 : 645,329.04 = 305,108.60 : x
  2. Step 2: Convert to fraction form
    430,292.48/645,329.04 = 305,108.60/x
  3. Step 3: Cross multiply
    430,292.48x = 645,329.04 × 305,108.60
  4. Step 4: Simplify right side
    430,292.48x = 196,895,439,933.74
  5. Step 5: Solve for x
    x = 196,895,439,933.74/430,292.48
  6. Step 6: Final answer
    x = 457,585.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.