Home / 355,075.75-489,996.95-193,931.45

Finding the Fourth Proportional to 355,075.75, 489,996.95 and 193,931.45

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Solution

The fourth proportional to 355,075.75, 489,996.95 and 193,931.45 is: 267,621.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,075.75 : 489,996.95 = 193,931.45 : x
  2. Step 2: Convert to fraction form
    355,075.75/489,996.95 = 193,931.45/x
  3. Step 3: Cross multiply
    355,075.75x = 489,996.95 × 193,931.45
  4. Step 4: Simplify right side
    355,075.75x = 95,025,819,009.08
  5. Step 5: Solve for x
    x = 95,025,819,009.08/355,075.75
  6. Step 6: Final answer
    x = 267,621.26

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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.