Home / 280,690.04-387,354.98-153,365.63

Finding the Fourth Proportional to 280,690.04, 387,354.98 and 153,365.63

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Solution

The fourth proportional to 280,690.04, 387,354.98 and 153,365.63 is: 211,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,690.04 : 387,354.98 = 153,365.63 : x
  2. Step 2: Convert to fraction form
    280,690.04/387,354.98 = 153,365.63/x
  3. Step 3: Cross multiply
    280,690.04x = 387,354.98 × 153,365.63
  4. Step 4: Simplify right side
    280,690.04x = 59,406,938,987.98
  5. Step 5: Solve for x
    x = 59,406,938,987.98/280,690.04
  6. Step 6: Final answer
    x = 211,646.05

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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.