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Finding the Fourth Proportional to 553,803.51, 830,705.18 and 133,079.39

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Solution

The fourth proportional to 553,803.51, 830,705.18 and 133,079.39 is: 199,619.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,803.51 : 830,705.18 = 133,079.39 : x
  2. Step 2: Convert to fraction form
    553,803.51/830,705.18 = 133,079.39/x
  3. Step 3: Cross multiply
    553,803.51x = 830,705.18 × 133,079.39
  4. Step 4: Simplify right side
    553,803.51x = 110,549,738,624.24
  5. Step 5: Solve for x
    x = 110,549,738,624.24/553,803.51
  6. Step 6: Final answer
    x = 199,619.06

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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.