Home / 427,926.47-642,009.69-171,938.79

Finding the Fourth Proportional to 427,926.47, 642,009.69 and 171,938.79

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Solution

The fourth proportional to 427,926.47, 642,009.69 and 171,938.79 is: 257,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,926.47 : 642,009.69 = 171,938.79 : x
  2. Step 2: Convert to fraction form
    427,926.47/642,009.69 = 171,938.79/x
  3. Step 3: Cross multiply
    427,926.47x = 642,009.69 × 171,938.79
  4. Step 4: Simplify right side
    427,926.47x = 110,386,369,266.88
  5. Step 5: Solve for x
    x = 110,386,369,266.88/427,926.47
  6. Step 6: Final answer
    x = 257,956.40

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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.