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Finding the Fourth Proportional to 245,313.20, 367,969.80 and 221,985.20

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Solution

The fourth proportional to 245,313.20, 367,969.80 and 221,985.20 is: 332,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,313.20 : 367,969.80 = 221,985.20 : x
  2. Step 2: Convert to fraction form
    245,313.20/367,969.80 = 221,985.20/x
  3. Step 3: Cross multiply
    245,313.20x = 367,969.80 × 221,985.20
  4. Step 4: Simplify right side
    245,313.20x = 81,683,849,646.96
  5. Step 5: Solve for x
    x = 81,683,849,646.96/245,313.20
  6. Step 6: Final answer
    x = 332,977.80

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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.