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Finding the Fourth Proportional to 556,921.20, 768,551.96 and 302,272.40

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Solution

The fourth proportional to 556,921.20, 768,551.96 and 302,272.40 is: 417,136.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,921.20 : 768,551.96 = 302,272.40 : x
  2. Step 2: Convert to fraction form
    556,921.20/768,551.96 = 302,272.40/x
  3. Step 3: Cross multiply
    556,921.20x = 768,551.96 × 302,272.40
  4. Step 4: Simplify right side
    556,921.20x = 232,312,045,473.90
  5. Step 5: Solve for x
    x = 232,312,045,473.90/556,921.20
  6. Step 6: Final answer
    x = 417,136.29

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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.