Finding the Fourth Proportional to 387,252,937.84, 534,409,065.12 and 213,412,681.84
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Solution
The fourth proportional to 387,252,937.84, 534,409,065.12 and 213,412,681.84 is: 294,509,506.95
Step by Step Solution
- Step 1: Write the proportion equation
387,252,937.84 : 534,409,065.12 = 213,412,681.84 : x - Step 2: Convert to fraction form
387,252,937.84/534,409,065.12 = 213,412,681.84/x - Step 3: Cross multiply
387,252,937.84x = 534,409,065.12 × 213,412,681.84 - Step 4: Simplify right side
387,252,937.84x = 114,049,671,786,866,400 - Step 5: Solve for x
x = 114,049,671,786,866,400/387,252,937.84 - Step 6: Final answer
x = 294,509,506.95
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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.