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Finding the Fourth Proportional to 313,080, 432,050.40 and 178,946.88

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Solution

The fourth proportional to 313,080, 432,050.40 and 178,946.88 is: 246,946.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,080 : 432,050.40 = 178,946.88 : x
  2. Step 2: Convert to fraction form
    313,080/432,050.40 = 178,946.88/x
  3. Step 3: Cross multiply
    313,080x = 432,050.40 × 178,946.88
  4. Step 4: Simplify right side
    313,080x = 77,314,071,082.75
  5. Step 5: Solve for x
    x = 77,314,071,082.75/313,080
  6. Step 6: Final answer
    x = 246,946.69

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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.