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Finding the Fourth Proportional to 229,807.90, 317,005.36 and 137,903.40

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Solution

The fourth proportional to 229,807.90, 317,005.36 and 137,903.40 is: 190,228.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,807.90 : 317,005.36 = 137,903.40 : x
  2. Step 2: Convert to fraction form
    229,807.90/317,005.36 = 137,903.40/x
  3. Step 3: Cross multiply
    229,807.90x = 317,005.36 × 137,903.40
  4. Step 4: Simplify right side
    229,807.90x = 43,716,116,962.22
  5. Step 5: Solve for x
    x = 43,716,116,962.22/229,807.90
  6. Step 6: Final answer
    x = 190,228.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.