Home / 287,864,186.10-431,796,279.15-142,320,210.90

Finding the Fourth Proportional to 287,864,186.10, 431,796,279.15 and 142,320,210.90

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Solution

The fourth proportional to 287,864,186.10, 431,796,279.15 and 142,320,210.90 is: 213,480,316.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,864,186.10 : 431,796,279.15 = 142,320,210.90 : x
  2. Step 2: Convert to fraction form
    287,864,186.10/431,796,279.15 = 142,320,210.90/x
  3. Step 3: Cross multiply
    287,864,186.10x = 431,796,279.15 × 142,320,210.90
  4. Step 4: Simplify right side
    287,864,186.10x = 61,453,337,514,463,272
  5. Step 5: Solve for x
    x = 61,453,337,514,463,272/287,864,186.10
  6. Step 6: Final answer
    x = 213,480,316.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.