Home / 443,345.19-665,111.30-143,802.51

Finding the Fourth Proportional to 443,345.19, 665,111.30 and 143,802.51

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Solution

The fourth proportional to 443,345.19, 665,111.30 and 143,802.51 is: 215,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,345.19 : 665,111.30 = 143,802.51 : x
  2. Step 2: Convert to fraction form
    443,345.19/665,111.30 = 143,802.51/x
  3. Step 3: Cross multiply
    443,345.19x = 665,111.30 × 143,802.51
  4. Step 4: Simplify right side
    443,345.19x = 95,644,674,369.36
  5. Step 5: Solve for x
    x = 95,644,674,369.36/443,345.19
  6. Step 6: Final answer
    x = 215,734.10

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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.