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Finding the Fourth Proportional to 320,689.04, 480,955.80 and 133,598.48

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Solution

The fourth proportional to 320,689.04, 480,955.80 and 133,598.48 is: 200,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,689.04 : 480,955.80 = 133,598.48 : x
  2. Step 2: Convert to fraction form
    320,689.04/480,955.80 = 133,598.48/x
  3. Step 3: Cross multiply
    320,689.04x = 480,955.80 × 133,598.48
  4. Step 4: Simplify right side
    320,689.04x = 64,254,963,827.18
  5. Step 5: Solve for x
    x = 64,254,963,827.18/320,689.04
  6. Step 6: Final answer
    x = 200,365.33

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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.