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Finding the Fourth Proportional to 506,143.56, 698,486.40 and 302,212.30

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Solution

The fourth proportional to 506,143.56, 698,486.40 and 302,212.30 is: 417,057.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,143.56 : 698,486.40 = 302,212.30 : x
  2. Step 2: Convert to fraction form
    506,143.56/698,486.40 = 302,212.30/x
  3. Step 3: Cross multiply
    506,143.56x = 698,486.40 × 302,212.30
  4. Step 4: Simplify right side
    506,143.56x = 211,091,181,462.72
  5. Step 5: Solve for x
    x = 211,091,181,462.72/506,143.56
  6. Step 6: Final answer
    x = 417,057.92

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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.