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Finding the Fourth Proportional to 289,483.47, 399,491.19 and 166,973.40

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Solution

The fourth proportional to 289,483.47, 399,491.19 and 166,973.40 is: 230,425.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,483.47 : 399,491.19 = 166,973.40 : x
  2. Step 2: Convert to fraction form
    289,483.47/399,491.19 = 166,973.40/x
  3. Step 3: Cross multiply
    289,483.47x = 399,491.19 × 166,973.40
  4. Step 4: Simplify right side
    289,483.47x = 66,704,402,264.35
  5. Step 5: Solve for x
    x = 66,704,402,264.35/289,483.47
  6. Step 6: Final answer
    x = 230,425.60

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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.