Home / 258,063,590.80-387,095,386.20-256,272,000.40

Finding the Fourth Proportional to 258,063,590.80, 387,095,386.20 and 256,272,000.40

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Solution

The fourth proportional to 258,063,590.80, 387,095,386.20 and 256,272,000.40 is: 384,408,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,063,590.80 : 387,095,386.20 = 256,272,000.40 : x
  2. Step 2: Convert to fraction form
    258,063,590.80/387,095,386.20 = 256,272,000.40/x
  3. Step 3: Cross multiply
    258,063,590.80x = 387,095,386.20 × 256,272,000.40
  4. Step 4: Simplify right side
    258,063,590.80x = 99,201,708,967,084,560
  5. Step 5: Solve for x
    x = 99,201,708,967,084,560/258,063,590.80
  6. Step 6: Final answer
    x = 384,408,000.60

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1.5x scale

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.