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Finding the Fourth Proportional to 289,875.10, 404,995.70 and 289,875.10

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Solution

The fourth proportional to 289,875.10, 404,995.70 and 289,875.10 is: 404,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,875.10 : 404,995.70 = 289,875.10 : x
  2. Step 2: Convert to fraction form
    289,875.10/404,995.70 = 289,875.10/x
  3. Step 3: Cross multiply
    289,875.10x = 404,995.70 × 289,875.10
  4. Step 4: Simplify right side
    289,875.10x = 117,398,169,037.07
  5. Step 5: Solve for x
    x = 117,398,169,037.07/289,875.10
  6. Step 6: Final answer
    x = 404,995.70

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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.