Home / 430,637.36-645,301.04-205,688.04

Finding the Fourth Proportional to 430,637.36, 645,301.04 and 205,688.04

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Solution

The fourth proportional to 430,637.36, 645,301.04 and 205,688.04 is: 308,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,637.36 : 645,301.04 = 205,688.04 : x
  2. Step 2: Convert to fraction form
    430,637.36/645,301.04 = 205,688.04/x
  3. Step 3: Cross multiply
    430,637.36x = 645,301.04 × 205,688.04
  4. Step 4: Simplify right side
    430,637.36x = 132,730,706,127.56
  5. Step 5: Solve for x
    x = 132,730,706,127.56/430,637.36
  6. Step 6: Final answer
    x = 308,219.21

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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.