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Finding the Fourth Proportional to 425,333.80, 637,638.30 and 188,547.40

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Solution

The fourth proportional to 425,333.80, 637,638.30 and 188,547.40 is: 282,660.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,333.80 : 637,638.30 = 188,547.40 : x
  2. Step 2: Convert to fraction form
    425,333.80/637,638.30 = 188,547.40/x
  3. Step 3: Cross multiply
    425,333.80x = 637,638.30 × 188,547.40
  4. Step 4: Simplify right side
    425,333.80x = 120,225,043,605.42
  5. Step 5: Solve for x
    x = 120,225,043,605.42/425,333.80
  6. Step 6: Final answer
    x = 282,660.45

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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.