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Finding the Fourth Proportional to 155,457.40, 233,186.10 and 55,665.40

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Solution

The fourth proportional to 155,457.40, 233,186.10 and 55,665.40 is: 83,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,457.40 : 233,186.10 = 55,665.40 : x
  2. Step 2: Convert to fraction form
    155,457.40/233,186.10 = 55,665.40/x
  3. Step 3: Cross multiply
    155,457.40x = 233,186.10 × 55,665.40
  4. Step 4: Simplify right side
    155,457.40x = 12,980,397,530.94
  5. Step 5: Solve for x
    x = 12,980,397,530.94/155,457.40
  6. Step 6: Final answer
    x = 83,498.10

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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.