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Finding the Fourth Proportional to 453,088.80, 679,438.80 and 228,362.40

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Solution

The fourth proportional to 453,088.80, 679,438.80 and 228,362.40 is: 342,445.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,088.80 : 679,438.80 = 228,362.40 : x
  2. Step 2: Convert to fraction form
    453,088.80/679,438.80 = 228,362.40/x
  3. Step 3: Cross multiply
    453,088.80x = 679,438.80 × 228,362.40
  4. Step 4: Simplify right side
    453,088.80x = 155,158,275,021.12
  5. Step 5: Solve for x
    x = 155,158,275,021.12/453,088.80
  6. Step 6: Final answer
    x = 342,445.62

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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.