Home / 256,931.40-385,397.10-69,942.60

Finding the Fourth Proportional to 256,931.40, 385,397.10 and 69,942.60

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Solution

The fourth proportional to 256,931.40, 385,397.10 and 69,942.60 is: 104,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,931.40 : 385,397.10 = 69,942.60 : x
  2. Step 2: Convert to fraction form
    256,931.40/385,397.10 = 69,942.60/x
  3. Step 3: Cross multiply
    256,931.40x = 385,397.10 × 69,942.60
  4. Step 4: Simplify right side
    256,931.40x = 26,955,675,206.46
  5. Step 5: Solve for x
    x = 26,955,675,206.46/256,931.40
  6. Step 6: Final answer
    x = 104,913.90

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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.