Home / 280,784.63-387,482.81-153,460.23

Finding the Fourth Proportional to 280,784.63, 387,482.81 and 153,460.23

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Solution

The fourth proportional to 280,784.63, 387,482.81 and 153,460.23 is: 211,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,784.63 : 387,482.81 = 153,460.23 : x
  2. Step 2: Convert to fraction form
    280,784.63/387,482.81 = 153,460.23/x
  3. Step 3: Cross multiply
    280,784.63x = 387,482.81 × 153,460.23
  4. Step 4: Simplify right side
    280,784.63x = 59,463,200,376.35
  5. Step 5: Solve for x
    x = 59,463,200,376.35/280,784.63
  6. Step 6: Final answer
    x = 211,775.12

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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.