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Finding the Fourth Proportional to 610,920.60, 916,818.30 and 256,189.20

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Solution

The fourth proportional to 610,920.60, 916,818.30 and 256,189.20 is: 384,467.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,920.60 : 916,818.30 = 256,189.20 : x
  2. Step 2: Convert to fraction form
    610,920.60/916,818.30 = 256,189.20/x
  3. Step 3: Cross multiply
    610,920.60x = 916,818.30 × 256,189.20
  4. Step 4: Simplify right side
    610,920.60x = 234,878,946,822.36
  5. Step 5: Solve for x
    x = 234,878,946,822.36/610,920.60
  6. Step 6: Final answer
    x = 384,467.22

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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.