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Finding the Fourth Proportional to 358,905.60, 538,358.40 and 302,918.40

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Solution

The fourth proportional to 358,905.60, 538,358.40 and 302,918.40 is: 454,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,905.60 : 538,358.40 = 302,918.40 : x
  2. Step 2: Convert to fraction form
    358,905.60/538,358.40 = 302,918.40/x
  3. Step 3: Cross multiply
    358,905.60x = 538,358.40 × 302,918.40
  4. Step 4: Simplify right side
    358,905.60x = 163,078,665,154.56
  5. Step 5: Solve for x
    x = 163,078,665,154.56/358,905.60
  6. Step 6: Final answer
    x = 454,377.60

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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.