Home / 430,386.50-645,683.44-134,898.50

Finding the Fourth Proportional to 430,386.50, 645,683.44 and 134,898.50

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Solution

The fourth proportional to 430,386.50, 645,683.44 and 134,898.50 is: 202,380.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,386.50 : 645,683.44 = 134,898.50 : x
  2. Step 2: Convert to fraction form
    430,386.50/645,683.44 = 134,898.50/x
  3. Step 3: Cross multiply
    430,386.50x = 645,683.44 × 134,898.50
  4. Step 4: Simplify right side
    430,386.50x = 87,101,727,530.84
  5. Step 5: Solve for x
    x = 87,101,727,530.84/430,386.50
  6. Step 6: Final answer
    x = 202,380.25

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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.