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Finding the Fourth Proportional to 557,221.06, 768,965.16 and 302,572.32

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Solution

The fourth proportional to 557,221.06, 768,965.16 and 302,572.32 is: 417,549.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,221.06 : 768,965.16 = 302,572.32 : x
  2. Step 2: Convert to fraction form
    557,221.06/768,965.16 = 302,572.32/x
  3. Step 3: Cross multiply
    557,221.06x = 768,965.16 × 302,572.32
  4. Step 4: Simplify right side
    557,221.06x = 232,667,572,460.37
  5. Step 5: Solve for x
    x = 232,667,572,460.37/557,221.06
  6. Step 6: Final answer
    x = 417,549.85

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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.