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Finding the Fourth Proportional to 630,139.84, 944,894.40 and 209,268.16

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Solution

The fourth proportional to 630,139.84, 944,894.40 and 209,268.16 is: 313,797.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,139.84 : 944,894.40 = 209,268.16 : x
  2. Step 2: Convert to fraction form
    630,139.84/944,894.40 = 209,268.16/x
  3. Step 3: Cross multiply
    630,139.84x = 944,894.40 × 209,268.16
  4. Step 4: Simplify right side
    630,139.84x = 197,736,312,482.30
  5. Step 5: Solve for x
    x = 197,736,312,482.30/630,139.84
  6. Step 6: Final answer
    x = 313,797.51

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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.