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Finding the Fourth Proportional to 538,429.40, 807,498.30 and 159,349.40

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Solution

The fourth proportional to 538,429.40, 807,498.30 and 159,349.40 is: 238,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,429.40 : 807,498.30 = 159,349.40 : x
  2. Step 2: Convert to fraction form
    538,429.40/807,498.30 = 159,349.40/x
  3. Step 3: Cross multiply
    538,429.40x = 807,498.30 × 159,349.40
  4. Step 4: Simplify right side
    538,429.40x = 128,674,369,606.02
  5. Step 5: Solve for x
    x = 128,674,369,606.02/538,429.40
  6. Step 6: Final answer
    x = 238,980.95

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1.5x scale

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.