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Finding the Fourth Proportional to 448,070.64, 618,330.96 and 257,079.84

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Solution

The fourth proportional to 448,070.64, 618,330.96 and 257,079.84 is: 354,766.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,070.64 : 618,330.96 = 257,079.84 : x
  2. Step 2: Convert to fraction form
    448,070.64/618,330.96 = 257,079.84/x
  3. Step 3: Cross multiply
    448,070.64x = 618,330.96 × 257,079.84
  4. Step 4: Simplify right side
    448,070.64x = 158,960,424,263.85
  5. Step 5: Solve for x
    x = 158,960,424,263.85/448,070.64
  6. Step 6: Final answer
    x = 354,766.44

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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.