Home / 211,111.48-316,637.94-53,330.20

Finding the Fourth Proportional to 211,111.48, 316,637.94 and 53,330.20

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Solution

The fourth proportional to 211,111.48, 316,637.94 and 53,330.20 is: 79,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,111.48 : 316,637.94 = 53,330.20 : x
  2. Step 2: Convert to fraction form
    211,111.48/316,637.94 = 53,330.20/x
  3. Step 3: Cross multiply
    211,111.48x = 316,637.94 × 53,330.20
  4. Step 4: Simplify right side
    211,111.48x = 16,886,364,667.79
  5. Step 5: Solve for x
    x = 16,886,364,667.79/211,111.48
  6. Step 6: Final answer
    x = 79,987.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.