Home / 390,803,886.72-539,284,834.80-214,590,648.24

Finding the Fourth Proportional to 390,803,886.72, 539,284,834.80 and 214,590,648.24

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Solution

The fourth proportional to 390,803,886.72, 539,284,834.80 and 214,590,648.24 is: 296,121,625.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,803,886.72 : 539,284,834.80 = 214,590,648.24 : x
  2. Step 2: Convert to fraction form
    390,803,886.72/539,284,834.80 = 214,590,648.24/x
  3. Step 3: Cross multiply
    390,803,886.72x = 539,284,834.80 × 214,590,648.24
  4. Step 4: Simplify right side
    390,803,886.72x = 115,725,482,285,733,312
  5. Step 5: Solve for x
    x = 115,725,482,285,733,312/390,803,886.72
  6. Step 6: Final answer
    x = 296,121,625.75

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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.