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Finding the Fourth Proportional to 298,925.67, 448,495.45 and 128,075.61

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Solution

The fourth proportional to 298,925.67, 448,495.45 and 128,075.61 is: 192,159.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,925.67 : 448,495.45 = 128,075.61 : x
  2. Step 2: Convert to fraction form
    298,925.67/448,495.45 = 128,075.61/x
  3. Step 3: Cross multiply
    298,925.67x = 448,495.45 × 128,075.61
  4. Step 4: Simplify right side
    298,925.67x = 57,441,329,702.64
  5. Step 5: Solve for x
    x = 57,441,329,702.64/298,925.67
  6. Step 6: Final answer
    x = 192,159.24

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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.