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Finding the Fourth Proportional to 223,424.18, 308,254.46 and 138,590.45

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Solution

The fourth proportional to 223,424.18, 308,254.46 and 138,590.45 is: 191,210.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,424.18 : 308,254.46 = 138,590.45 : x
  2. Step 2: Convert to fraction form
    223,424.18/308,254.46 = 138,590.45/x
  3. Step 3: Cross multiply
    223,424.18x = 308,254.46 × 138,590.45
  4. Step 4: Simplify right side
    223,424.18x = 42,721,124,325.91
  5. Step 5: Solve for x
    x = 42,721,124,325.91/223,424.18
  6. Step 6: Final answer
    x = 191,210.84

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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.