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Finding the Fourth Proportional to 385,235.20, 577,852.80 and 245,612.80

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Solution

The fourth proportional to 385,235.20, 577,852.80 and 245,612.80 is: 368,419.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,235.20 : 577,852.80 = 245,612.80 : x
  2. Step 2: Convert to fraction form
    385,235.20/577,852.80 = 245,612.80/x
  3. Step 3: Cross multiply
    385,235.20x = 577,852.80 × 245,612.80
  4. Step 4: Simplify right side
    385,235.20x = 141,928,044,195.84
  5. Step 5: Solve for x
    x = 141,928,044,195.84/385,235.20
  6. Step 6: Final answer
    x = 368,419.20

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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.