Home / 388,946.20-583,419.30-256,235.80

Finding the Fourth Proportional to 388,946.20, 583,419.30 and 256,235.80

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Solution

The fourth proportional to 388,946.20, 583,419.30 and 256,235.80 is: 384,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,946.20 : 583,419.30 = 256,235.80 : x
  2. Step 2: Convert to fraction form
    388,946.20/583,419.30 = 256,235.80/x
  3. Step 3: Cross multiply
    388,946.20x = 583,419.30 × 256,235.80
  4. Step 4: Simplify right side
    388,946.20x = 149,492,911,070.94
  5. Step 5: Solve for x
    x = 149,492,911,070.94/388,946.20
  6. Step 6: Final answer
    x = 384,353.70

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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.