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Finding the Fourth Proportional to 661,316.20, 992,012.70 and 188,036.20

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Solution

The fourth proportional to 661,316.20, 992,012.70 and 188,036.20 is: 282,065.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,316.20 : 992,012.70 = 188,036.20 : x
  2. Step 2: Convert to fraction form
    661,316.20/992,012.70 = 188,036.20/x
  3. Step 3: Cross multiply
    661,316.20x = 992,012.70 × 188,036.20
  4. Step 4: Simplify right side
    661,316.20x = 186,534,298,459.74
  5. Step 5: Solve for x
    x = 186,534,298,459.74/661,316.20
  6. Step 6: Final answer
    x = 282,065.22

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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.