Home / 212,547.30-319,080.15-210,992.10

Finding the Fourth Proportional to 212,547.30, 319,080.15 and 210,992.10

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Solution

The fourth proportional to 212,547.30, 319,080.15 and 210,992.10 is: 316,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,547.30 : 319,080.15 = 210,992.10 : x
  2. Step 2: Convert to fraction form
    212,547.30/319,080.15 = 210,992.10/x
  3. Step 3: Cross multiply
    212,547.30x = 319,080.15 × 210,992.10
  4. Step 4: Simplify right side
    212,547.30x = 67,323,390,916.82
  5. Step 5: Solve for x
    x = 67,323,390,916.82/212,547.30
  6. Step 6: Final answer
    x = 316,745.45

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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.