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Finding the Fourth Proportional to 308,001.40, 430,152.20 and 308,001.40

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Solution

The fourth proportional to 308,001.40, 430,152.20 and 308,001.40 is: 430,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,001.40 : 430,152.20 = 308,001.40 : x
  2. Step 2: Convert to fraction form
    308,001.40/430,152.20 = 308,001.40/x
  3. Step 3: Cross multiply
    308,001.40x = 430,152.20 × 308,001.40
  4. Step 4: Simplify right side
    308,001.40x = 132,487,479,813.08
  5. Step 5: Solve for x
    x = 132,487,479,813.08/308,001.40
  6. Step 6: Final answer
    x = 430,152.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.