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Finding the Fourth Proportional to 369,303.40, 553,955.25 and 285,186.52

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Solution

The fourth proportional to 369,303.40, 553,955.25 and 285,186.52 is: 427,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,303.40 : 553,955.25 = 285,186.52 : x
  2. Step 2: Convert to fraction form
    369,303.40/553,955.25 = 285,186.52/x
  3. Step 3: Cross multiply
    369,303.40x = 553,955.25 × 285,186.52
  4. Step 4: Simplify right side
    369,303.40x = 157,980,571,745.12
  5. Step 5: Solve for x
    x = 157,980,571,745.12/369,303.40
  6. Step 6: Final answer
    x = 427,779.90

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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.