Home / 430,384.50-645,680.43-134,896.50

Finding the Fourth Proportional to 430,384.50, 645,680.43 and 134,896.50

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Solution

The fourth proportional to 430,384.50, 645,680.43 and 134,896.50 is: 202,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,384.50 : 645,680.43 = 134,896.50 : x
  2. Step 2: Convert to fraction form
    430,384.50/645,680.43 = 134,896.50/x
  3. Step 3: Cross multiply
    430,384.50x = 645,680.43 × 134,896.50
  4. Step 4: Simplify right side
    430,384.50x = 87,100,030,125.50
  5. Step 5: Solve for x
    x = 87,100,030,125.50/430,384.50
  6. Step 6: Final answer
    x = 202,377.25

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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.