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Finding the Fourth Proportional to 368,082.30, 507,638.66 and 253,543.62

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Solution

The fourth proportional to 368,082.30, 507,638.66 and 253,543.62 is: 349,673.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,082.30 : 507,638.66 = 253,543.62 : x
  2. Step 2: Convert to fraction form
    368,082.30/507,638.66 = 253,543.62/x
  3. Step 3: Cross multiply
    368,082.30x = 507,638.66 × 253,543.62
  4. Step 4: Simplify right side
    368,082.30x = 128,708,543,508.35
  5. Step 5: Solve for x
    x = 128,708,543,508.35/368,082.30
  6. Step 6: Final answer
    x = 349,673.28

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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.