Home / 229,431.61-316,637.01-138,809.83

Finding the Fourth Proportional to 229,431.61, 316,637.01 and 138,809.83

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Solution

The fourth proportional to 229,431.61, 316,637.01 and 138,809.83 is: 191,570.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,431.61 : 316,637.01 = 138,809.83 : x
  2. Step 2: Convert to fraction form
    229,431.61/316,637.01 = 138,809.83/x
  3. Step 3: Cross multiply
    229,431.61x = 316,637.01 × 138,809.83
  4. Step 4: Simplify right side
    229,431.61x = 43,952,329,529.81
  5. Step 5: Solve for x
    x = 43,952,329,529.81/229,431.61
  6. Step 6: Final answer
    x = 191,570.51

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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.