Finding the Fourth Proportional to 287,830,529.64, 397,206,126.81 and 155,671,537.68
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Solution
The fourth proportional to 287,830,529.64, 397,206,126.81 and 155,671,537.68 is: 214,826,719.78
Step by Step Solution
- Step 1: Write the proportion equation
287,830,529.64 : 397,206,126.81 = 155,671,537.68 : x - Step 2: Convert to fraction form
287,830,529.64/397,206,126.81 = 155,671,537.68/x - Step 3: Cross multiply
287,830,529.64x = 397,206,126.81 × 155,671,537.68 - Step 4: Simplify right side
287,830,529.64x = 61,833,688,536,429,776 - Step 5: Solve for x
x = 61,833,688,536,429,776/287,830,529.64 - Step 6: Final answer
x = 214,826,719.78
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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.