Home / 358,975.40-538,463.10-209,384.60

Finding the Fourth Proportional to 358,975.40, 538,463.10 and 209,384.60

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Solution

The fourth proportional to 358,975.40, 538,463.10 and 209,384.60 is: 314,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,975.40 : 538,463.10 = 209,384.60 : x
  2. Step 2: Convert to fraction form
    358,975.40/538,463.10 = 209,384.60/x
  3. Step 3: Cross multiply
    358,975.40x = 538,463.10 × 209,384.60
  4. Step 4: Simplify right side
    358,975.40x = 112,745,880,808.26
  5. Step 5: Solve for x
    x = 112,745,880,808.26/358,975.40
  6. Step 6: Final answer
    x = 314,076.90

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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.