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Finding the Fourth Proportional to 313,270.55, 432,313.76 and 170,030.60

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Solution

The fourth proportional to 313,270.55, 432,313.76 and 170,030.60 is: 234,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,270.55 : 432,313.76 = 170,030.60 : x
  2. Step 2: Convert to fraction form
    313,270.55/432,313.76 = 170,030.60/x
  3. Step 3: Cross multiply
    313,270.55x = 432,313.76 × 170,030.60
  4. Step 4: Simplify right side
    313,270.55x = 73,506,568,001.06
  5. Step 5: Solve for x
    x = 73,506,568,001.06/313,270.55
  6. Step 6: Final answer
    x = 234,642.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.