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Finding the Fourth Proportional to 201,312.90, 302,007.45 and 66,384.72

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Solution

The fourth proportional to 201,312.90, 302,007.45 and 66,384.72 is: 99,589.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,312.90 : 302,007.45 = 66,384.72 : x
  2. Step 2: Convert to fraction form
    201,312.90/302,007.45 = 66,384.72/x
  3. Step 3: Cross multiply
    201,312.90x = 302,007.45 × 66,384.72
  4. Step 4: Simplify right side
    201,312.90x = 20,048,680,006.16
  5. Step 5: Solve for x
    x = 20,048,680,006.16/201,312.90
  6. Step 6: Final answer
    x = 99,589.64

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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.