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Finding the Fourth Proportional to 242,705.80, 364,058.70 and 163,390.60

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Solution

The fourth proportional to 242,705.80, 364,058.70 and 163,390.60 is: 245,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,705.80 : 364,058.70 = 163,390.60 : x
  2. Step 2: Convert to fraction form
    242,705.80/364,058.70 = 163,390.60/x
  3. Step 3: Cross multiply
    242,705.80x = 364,058.70 × 163,390.60
  4. Step 4: Simplify right side
    242,705.80x = 59,483,769,428.22
  5. Step 5: Solve for x
    x = 59,483,769,428.22/242,705.80
  6. Step 6: Final answer
    x = 245,085.90

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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.