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Finding the Fourth Proportional to 355,044.70, 489,965.01 and 202,075.39

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Solution

The fourth proportional to 355,044.70, 489,965.01 and 202,075.39 is: 278,865.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,044.70 : 489,965.01 = 202,075.39 : x
  2. Step 2: Convert to fraction form
    355,044.70/489,965.01 = 202,075.39/x
  3. Step 3: Cross multiply
    355,044.70x = 489,965.01 × 202,075.39
  4. Step 4: Simplify right side
    355,044.70x = 99,009,870,482.10
  5. Step 5: Solve for x
    x = 99,009,870,482.10/355,044.70
  6. Step 6: Final answer
    x = 278,865.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.