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Finding the Fourth Proportional to 315,301.86, 435,130.74 and 177,528.23

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Solution

The fourth proportional to 315,301.86, 435,130.74 and 177,528.23 is: 244,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,301.86 : 435,130.74 = 177,528.23 : x
  2. Step 2: Convert to fraction form
    315,301.86/435,130.74 = 177,528.23/x
  3. Step 3: Cross multiply
    315,301.86x = 435,130.74 × 177,528.23
  4. Step 4: Simplify right side
    315,301.86x = 77,247,987,915.14
  5. Step 5: Solve for x
    x = 77,247,987,915.14/315,301.86
  6. Step 6: Final answer
    x = 244,996.93

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1.5x scale

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.