Home / 282,923.40-390,441.78-153,870.60

Finding the Fourth Proportional to 282,923.40, 390,441.78 and 153,870.60

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Solution

The fourth proportional to 282,923.40, 390,441.78 and 153,870.60 is: 212,345.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,923.40 : 390,441.78 = 153,870.60 : x
  2. Step 2: Convert to fraction form
    282,923.40/390,441.78 = 153,870.60/x
  3. Step 3: Cross multiply
    282,923.40x = 390,441.78 × 153,870.60
  4. Step 4: Simplify right side
    282,923.40x = 60,077,510,953.67
  5. Step 5: Solve for x
    x = 60,077,510,953.67/282,923.40
  6. Step 6: Final answer
    x = 212,345.50

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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.