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Finding the Fourth Proportional to 319,365.52, 478,916.48 and 109,020.40

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Solution

The fourth proportional to 319,365.52, 478,916.48 and 109,020.40 is: 163,485.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,365.52 : 478,916.48 = 109,020.40 : x
  2. Step 2: Convert to fraction form
    319,365.52/478,916.48 = 109,020.40/x
  3. Step 3: Cross multiply
    319,365.52x = 478,916.48 × 109,020.40
  4. Step 4: Simplify right side
    319,365.52x = 52,211,666,216.19
  5. Step 5: Solve for x
    x = 52,211,666,216.19/319,365.52
  6. Step 6: Final answer
    x = 163,485.61

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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.