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Finding the Fourth Proportional to 637,768, 956,695.74 and 211,303

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Solution

The fourth proportional to 637,768, 956,695.74 and 211,303 is: 316,968.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,768 : 956,695.74 = 211,303 : x
  2. Step 2: Convert to fraction form
    637,768/956,695.74 = 211,303/x
  3. Step 3: Cross multiply
    637,768x = 956,695.74 × 211,303
  4. Step 4: Simplify right side
    637,768x = 202,152,679,949.22
  5. Step 5: Solve for x
    x = 202,152,679,949.22/637,768
  6. Step 6: Final answer
    x = 316,968.99

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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.