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Finding the Fourth Proportional to 430,232.40, 645,348.60 and 288,514.80

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Solution

The fourth proportional to 430,232.40, 645,348.60 and 288,514.80 is: 432,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,232.40 : 645,348.60 = 288,514.80 : x
  2. Step 2: Convert to fraction form
    430,232.40/645,348.60 = 288,514.80/x
  3. Step 3: Cross multiply
    430,232.40x = 645,348.60 × 288,514.80
  4. Step 4: Simplify right side
    430,232.40x = 186,192,622,259.28
  5. Step 5: Solve for x
    x = 186,192,622,259.28/430,232.40
  6. Step 6: Final answer
    x = 432,772.20

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1.5x scale

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.