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Finding the Fourth Proportional to 303,461.34, 455,283.12 and 143,659.07

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Solution

The fourth proportional to 303,461.34, 455,283.12 and 143,659.07 is: 215,531.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,461.34 : 455,283.12 = 143,659.07 : x
  2. Step 2: Convert to fraction form
    303,461.34/455,283.12 = 143,659.07/x
  3. Step 3: Cross multiply
    303,461.34x = 455,283.12 × 143,659.07
  4. Step 4: Simplify right side
    303,461.34x = 65,405,547,329.48
  5. Step 5: Solve for x
    x = 65,405,547,329.48/303,461.34
  6. Step 6: Final answer
    x = 215,531.73

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1.5x scale

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.