Home / 326,090.24-489,136-89,436.16

Finding the Fourth Proportional to 326,090.24, 489,136 and 89,436.16

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Solution

The fourth proportional to 326,090.24, 489,136 and 89,436.16 is: 134,154.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,090.24 : 489,136 = 89,436.16 : x
  2. Step 2: Convert to fraction form
    326,090.24/489,136 = 89,436.16/x
  3. Step 3: Cross multiply
    326,090.24x = 489,136 × 89,436.16
  4. Step 4: Simplify right side
    326,090.24x = 43,746,445,557.76
  5. Step 5: Solve for x
    x = 43,746,445,557.76/326,090.24
  6. Step 6: Final answer
    x = 134,154.42

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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.