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Finding the Fourth Proportional to 289,590.52, 399,637.56 and 160,530.38

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Solution

The fourth proportional to 289,590.52, 399,637.56 and 160,530.38 is: 221,533.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,590.52 : 399,637.56 = 160,530.38 : x
  2. Step 2: Convert to fraction form
    289,590.52/399,637.56 = 160,530.38/x
  3. Step 3: Cross multiply
    289,590.52x = 399,637.56 × 160,530.38
  4. Step 4: Simplify right side
    289,590.52x = 64,153,969,369.07
  5. Step 5: Solve for x
    x = 64,153,969,369.07/289,590.52
  6. Step 6: Final answer
    x = 221,533.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.