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Finding the Fourth Proportional to 213,030.72, 317,926.08 and 189,411.84

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Solution

The fourth proportional to 213,030.72, 317,926.08 and 189,411.84 is: 282,677.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,030.72 : 317,926.08 = 189,411.84 : x
  2. Step 2: Convert to fraction form
    213,030.72/317,926.08 = 189,411.84/x
  3. Step 3: Cross multiply
    213,030.72x = 317,926.08 × 189,411.84
  4. Step 4: Simplify right side
    213,030.72x = 60,218,963,796.79
  5. Step 5: Solve for x
    x = 60,218,963,796.79/213,030.72
  6. Step 6: Final answer
    x = 282,677.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.