Home / 258,075,641.60-387,113,462.40-256,284,051.20

Finding the Fourth Proportional to 258,075,641.60, 387,113,462.40 and 256,284,051.20

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Solution

The fourth proportional to 258,075,641.60, 387,113,462.40 and 256,284,051.20 is: 384,426,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,075,641.60 : 387,113,462.40 = 256,284,051.20 : x
  2. Step 2: Convert to fraction form
    258,075,641.60/387,113,462.40 = 256,284,051.20/x
  3. Step 3: Cross multiply
    258,075,641.60x = 387,113,462.40 × 256,284,051.20
  4. Step 4: Simplify right side
    258,075,641.60x = 99,211,006,417,930,864
  5. Step 5: Solve for x
    x = 99,211,006,417,930,864/258,075,641.60
  6. Step 6: Final answer
    x = 384,426,076.80

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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.