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Finding the Fourth Proportional to 319,017.48, 478,573.48 and 102,803.74

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Solution

The fourth proportional to 319,017.48, 478,573.48 and 102,803.74 is: 154,220.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,017.48 : 478,573.48 = 102,803.74 : x
  2. Step 2: Convert to fraction form
    319,017.48/478,573.48 = 102,803.74/x
  3. Step 3: Cross multiply
    319,017.48x = 478,573.48 × 102,803.74
  4. Step 4: Simplify right side
    319,017.48x = 49,199,143,608.82
  5. Step 5: Solve for x
    x = 49,199,143,608.82/319,017.48
  6. Step 6: Final answer
    x = 154,220.84

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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.