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Finding the Fourth Proportional to 297,315.40, 446,030.70 and 128,835.40

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Solution

The fourth proportional to 297,315.40, 446,030.70 and 128,835.40 is: 193,278.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,315.40 : 446,030.70 = 128,835.40 : x
  2. Step 2: Convert to fraction form
    297,315.40/446,030.70 = 128,835.40/x
  3. Step 3: Cross multiply
    297,315.40x = 446,030.70 × 128,835.40
  4. Step 4: Simplify right side
    297,315.40x = 57,464,543,646.78
  5. Step 5: Solve for x
    x = 57,464,543,646.78/297,315.40
  6. Step 6: Final answer
    x = 193,278.06

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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.