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Finding the Fourth Proportional to 256,995.84, 385,498.88 and 70,012.16

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Solution

The fourth proportional to 256,995.84, 385,498.88 and 70,012.16 is: 105,019.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,995.84 : 385,498.88 = 70,012.16 : x
  2. Step 2: Convert to fraction form
    256,995.84/385,498.88 = 70,012.16/x
  3. Step 3: Cross multiply
    256,995.84x = 385,498.88 × 70,012.16
  4. Step 4: Simplify right side
    256,995.84x = 26,989,609,266.38
  5. Step 5: Solve for x
    x = 26,989,609,266.38/256,995.84
  6. Step 6: Final answer
    x = 105,019.63

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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.