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Finding the Fourth Proportional to 553,836.77, 830,281.29 and 212,525.12

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Solution

The fourth proportional to 553,836.77, 830,281.29 and 212,525.12 is: 318,605.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,836.77 : 830,281.29 = 212,525.12 : x
  2. Step 2: Convert to fraction form
    553,836.77/830,281.29 = 212,525.12/x
  3. Step 3: Cross multiply
    553,836.77x = 830,281.29 × 212,525.12
  4. Step 4: Simplify right side
    553,836.77x = 176,455,630,902.16
  5. Step 5: Solve for x
    x = 176,455,630,902.16/553,836.77
  6. Step 6: Final answer
    x = 318,605.84

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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.