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Finding the Fourth Proportional to 320,501.79, 480,753.51 and 130,962.16

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Solution

The fourth proportional to 320,501.79, 480,753.51 and 130,962.16 is: 196,443.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,501.79 : 480,753.51 = 130,962.16 : x
  2. Step 2: Convert to fraction form
    320,501.79/480,753.51 = 130,962.16/x
  3. Step 3: Cross multiply
    320,501.79x = 480,753.51 × 130,962.16
  4. Step 4: Simplify right side
    320,501.79x = 62,960,518,207.02
  5. Step 5: Solve for x
    x = 62,960,518,207.02/320,501.79
  6. Step 6: Final answer
    x = 196,443.58

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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.