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Finding the Fourth Proportional to 358,986.80, 537,443.40 and 219,018.80

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Solution

The fourth proportional to 358,986.80, 537,443.40 and 219,018.80 is: 327,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,986.80 : 537,443.40 = 219,018.80 : x
  2. Step 2: Convert to fraction form
    358,986.80/537,443.40 = 219,018.80/x
  3. Step 3: Cross multiply
    358,986.80x = 537,443.40 × 219,018.80
  4. Step 4: Simplify right side
    358,986.80x = 117,710,208,535.92
  5. Step 5: Solve for x
    x = 117,710,208,535.92/358,986.80
  6. Step 6: Final answer
    x = 327,895.65

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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.