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Finding the Fourth Proportional to 289,328.80, 404,127.20 and 289,328.80

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Solution

The fourth proportional to 289,328.80, 404,127.20 and 289,328.80 is: 404,127.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,328.80 : 404,127.20 = 289,328.80 : x
  2. Step 2: Convert to fraction form
    289,328.80/404,127.20 = 289,328.80/x
  3. Step 3: Cross multiply
    289,328.80x = 404,127.20 × 289,328.80
  4. Step 4: Simplify right side
    289,328.80x = 116,925,637,823.36
  5. Step 5: Solve for x
    x = 116,925,637,823.36/289,328.80
  6. Step 6: Final answer
    x = 404,127.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.