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Finding the Fourth Proportional to 553,379.40, 830,069.10 and 198,429.30

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Solution

The fourth proportional to 553,379.40, 830,069.10 and 198,429.30 is: 297,643.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,379.40 : 830,069.10 = 198,429.30 : x
  2. Step 2: Convert to fraction form
    553,379.40/830,069.10 = 198,429.30/x
  3. Step 3: Cross multiply
    553,379.40x = 830,069.10 × 198,429.30
  4. Step 4: Simplify right side
    553,379.40x = 164,710,030,464.63
  5. Step 5: Solve for x
    x = 164,710,030,464.63/553,379.40
  6. Step 6: Final answer
    x = 297,643.95

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Similar ratio
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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.