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Finding the Fourth Proportional to 219,313.29, 302,700.33 and 138,848.10

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Solution

The fourth proportional to 219,313.29, 302,700.33 and 138,848.10 is: 191,640.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,313.29 : 302,700.33 = 138,848.10 : x
  2. Step 2: Convert to fraction form
    219,313.29/302,700.33 = 138,848.10/x
  3. Step 3: Cross multiply
    219,313.29x = 302,700.33 × 138,848.10
  4. Step 4: Simplify right side
    219,313.29x = 42,029,365,689.87
  5. Step 5: Solve for x
    x = 42,029,365,689.87/219,313.29
  6. Step 6: Final answer
    x = 191,640.76

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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.