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Finding the Fourth Proportional to 631,916.16, 872,201 and 360,145.24

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Solution

The fourth proportional to 631,916.16, 872,201 and 360,145.24 is: 497,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,916.16 : 872,201 = 360,145.24 : x
  2. Step 2: Convert to fraction form
    631,916.16/872,201 = 360,145.24/x
  3. Step 3: Cross multiply
    631,916.16x = 872,201 × 360,145.24
  4. Step 4: Simplify right side
    631,916.16x = 314,119,038,473.24
  5. Step 5: Solve for x
    x = 314,119,038,473.24/631,916.16
  6. Step 6: Final answer
    x = 497,089.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.